Singer performed her '25' track 'All I Ask'
Adele treated her most loyal fans to intimate pre-awards show on Friday
The chart-topping singer has sued photographers who've taken her son Angelo's photo in the past
Singer offering eight pairs of tickets to lucky donors until 9pm tonight
Words to 2015 single quoted in Oklahoma anti-harassment posters
However, only her most loyal fans will be able to get tickets
Tickets were sold for $1,500 a pop at the Conservative Party's Black and White Party fundraiser
'25' called a "runaway global sensation" by IFPI chief
US Presidential candidate continues to play 'Skyfall' and 'Rolling In The Deep'
Trump has played 'Rolling In The Deep' and 'Skyfall' at rallies